There's a somewhat confusing (at least to me) history and at least a couple of versions of what really went on when HighSTandard was closing down production in CT.
HS closed the Hamden factory where all the really nice stuff had been made and moved to East Hartford.
There the quality took adive as most of the older and quality emplyees from the Hamden plant didn't follow the move.
when the E Hartford plant was seen as closing , a group of former HS emplyees formed a corp along with a mfg in Texas (Mitchell Arms Corp) to make the clone H/Stdards.
I believe the actual mfg'g was done by Aimco Co in Houston, same Company that made the Mitchell stainless steel Luger repro.
Aimco was actually in the oil rigging mgf bus in some way.
I don't know if this HS group also had their hands in the Luger project as well.
Everything gets fuzzy at this point.
Problems of the HS name was still owned by someone else (can't remember who) & that person also did, or wanted to make the HS pistols at another location as well.
Lawsuits of course....
Production problems,
QC issues...many HS followers won't touch a Mitchell HS pistol.
Others find them better finished than the older originals.
Lots of info on the net with a search. Much of it confusing but interesting if you like that sort of thing.
In the end I think the Texas based mfgr 'Mitchell' prevailed (business office was somewhere else) and got the name rights (High Standard) and went on to produce the
Riot length non TD shotguns in 3 or 4 different models as well as the pistol line.
Everything in stainless IIRC.
I'll see if I can find the manual for them.
added..
Well that wasn't hard to find.
https://ia803403.us.archive.org/9/it...tguns_text.pdf
Don't know if there are other models of the Mithchell/HS shotgun or not but these came right up in a search.
I remembered working on one that had a 3" shell stuck in the chamber. That's the only time I had seen one. Easy fix!